WASHINGTON -- U.S. intelligence analysts believe Osama bin Laden has shifted from outright calls for violence to political arguments in recent taped messages in hopes of driving a wedge between the United States and its allies, officials said Tuesday. The analysts believe bin Laden is making the tactical shift to try to exploit some allies' concerns with U.S. policy in the Middle East and to attract more moderate Muslims who distrust the United States but have not embraced al-Qaida's violence, the officials said. One U.S. official, speaking on condition of anonymity, said the CIA's technical analysis of a two-minute, five-second...